Engine Mechanical:
Engine assembly, cylinder head, pistons, crankshaft, camshaft, timing system, lubrication system, cooling system
Engine Performance:
Fuel delivery, ignition system, emissions control, engine diagnostics
Transmission Manual:
Clutch, gearbox assembly, gear shifting mechanisms, internal components
Transmission Automatic:
Torque converter, transmission hydraulics, gear sets, electronic controls (if applicable to specific engine/model)
Transfer Case:
Operation, maintenance, overhaul, specific to 4WD systems
Axles And Differentials:
Front and rear axle assemblies, differential gears, bearing adjustments, lubrication
Suspension Front:
Leaf spring removal/installation, shock absorber replacement, steering knuckle service
Suspension Rear:
Leaf spring removal/installation, shock absorber replacement, axle housing service
Steering System:
Steering column, steering gearbox, power steering pump and hoses, tie rods, steering linkage
Brake System:
Disc brake calipers, pads, rotors, master cylinder, brake booster, hydraulic lines, parking brake
Electrical System Battery:
Battery testing, charging system (alternator, regulator)
Electrical System Lighting:
Headlights, taillights, interior lighting, wiring
Electrical System Ignition:
Spark plugs, ignition coils, distributor (if applicable), ignition control module
Electrical System Accessories:
Wipers, horn, power windows, door locks, radio, dashboard instruments
HVAC System:
Air conditioning system components, heater core, blower motor, controls, refrigerant service
Fuel System Tank:
Fuel tank, fuel pump, fuel filter, fuel lines
Exhaust System Components:
Exhaust manifold, catalytic converter, muffler, tailpipe, hangers
Body Panel Repair:
Fenders, doors, hood, tailgate, quarter panels, structural components
Interior Trim Replacement:
Seats, dashboard, door panels, carpet, headliner
Exterior Trim Replacement:
Bumpers, grille, mirrors, moldings, emblems
Scheduled Maintenance:
Oil changes, filter replacements, fluid checks, tire rotations, inspections
Engine Overhaul:
Complete engine disassembly, inspection, repair, and reassembly
Transmission Repair:
Clutch replacement, gear synchronization repair, internal component replacement
Brake System Repair:
Brake pad/shoe replacement, rotor resurfacing/replacement, caliper/wheel cylinder overhaul, brake fluid bleeding
Suspension Component Replacement:
Shock absorber, strut, ball joint, tie rod end, control arm, leaf spring replacement
Electrical Troubleshooting:
Diagnosis of electrical faults, wiring harness repair, component testing
HVAC System Service:
Refrigerant recharge, leak detection, component replacement (compressor, condenser, evaporator)
Diagnostics And Testing:
Diagnostic trouble codes (DTCs) interpretation, component testing procedures, performance diagnostics
Tune Up Procedures:
Spark plug replacement, ignition timing adjustment, idle speed adjustment
Body And Chassis Alignment:
Wheel alignment specifications and procedures
Interior And Exterior Trim Installation:
Guidelines for fitting and securing trim components
Depth:
Comprehensive (covers basic maintenance to major overhauls and diagnostics)
Diagnostic Procedures:
Detailed troubleshooting charts and step-by-step diagnostic routines
Repair Instructions:
Step-by-step repair instructions with torque specifications, diagrams, and illustrations
Technical Specifications:
Detailed specifications for all major vehicle components and systems
Troubleshooting Guides:
Specific guides for identifying and resolving common and uncommon issues
Oil Change Interval:
Every 3,000 miles or 3 months (severe duty/off-road use recommended)
Engine Oil Filter:
Replace with every oil change
Air Filter Replacement:
Every 15,000 miles or 12 months
Spark Plug Replacement:
Approx. 30,000 miles for standard plugs, longer for platinum/iridium
Coolant Flush:
Every 30,000 miles or 2 years
Engine Oil Type 2 5L:
API SG/SH, SAE 10W-30
Engine Oil Type 4 0L:
API SG/SH, SAE 10W-30
Coolant Type:
Ethylene Glycol based coolant (Chrysler MS-6729 or equivalent)
Transmission Fluid Manual:
API GL-4, SAE 75W-90 Gear Oil
Transmission Fluid Automatic:
Chrysler ATF+3 (or equivalent)
Transfer Case Fluid:
ATF+3 (for NP231) or SAE 75W-90 (for some NP242 if equipped)
Yj Common Issues:
Leaf spring breakage (rear), differential leaks, heater core failures, radiator leaks, exhaust manifold cracks (especially 4.0L), clutch wear, aging rubber bushings and seals, interior water leaks.